Alkanol amine grinding aids
AssigneeThe Dow Chemical Company
InventorsRichard R. Klimpel, Donald E. Leonard, Basil S. Fee
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Abstract
The efficiency of grinding of silica-containing solids such as mineral ores is improved by the addition of alkanol amines as a grinding aid. Examples of useful amines include diethanol amine, ethanol amine, triethanol amine and mixtures thereof.
Claims8
A process for the wet grinding of silica- or siliceous gangue-containing solids which comprise ores containing mineral values, comprising carrying out the grinding operation in the presence of a sufficient amount of a liquid medium to yield a solids slurry of said silica or siliceous gangue-containing solids of about 40 to about 60 volume percent of said solids and a grinding aid consisting essentially of an amount of at least one alkanol amine dispersible in the liquid medium effective to act as a grinding aid, the alkanol amine corresponding to the formula
- (R).sub.X NH.sub.(3-x)
- wherein x is from one to three and R is separately in each occurrence a C.sub.1-6 alkanol.
Dependencies are inferred from the claim text.